Improvement in cultivators



THOMAS & MAST. Wheel Cultivator.

No. 52,093. Patented Jan. 16, 1866.

Q inventor, Witnesses: %%%uwZ/i AM PHOTO-LITHO. CU N.Y- (OSEDRNE'SPRBEESS.)

PATENT OFFICE.

J. H. THOMAS AND P. P. MAST, OF SPRINGFIELD, .OHIO.

IMPROVEMENT IN CULTIVATORS.

Specification forming part of Letters Patent No. 52,093, dated January16, 1866.

To all whom 'it may concern:

Be it known that we, J. H. THOMAS and P. P. MAST, of Springfield, in thecounty of Clarke and State of Ohio, have invented certain new and usefulImprovements in Cultivators and we do hereby declare that the followingis a clear, full, and exact description thereof, reference being bad tothe accompanying drawings, and to the letters of reference markedthereon, making part of this specification, in which Figure 1 is atop-plan view; Fig. 2, a longitudinal vertical section taken on the lineof or a; of Fig. 1. Figs. 3, 4, and 5 are views of parts detached.

Our invention consists of a novel arrangement of the shields forprotecting the plants, a novel arrangement of parts for elevating theplows and shields, and in a novel construction of castings to be used inthe construction of the implement.

To enable others skilled in the art to construct and use our invention,we will proceed to describe it.

A represents the main frame of the cultivator, which may be made inanysuitable form.

B represents the plow-beams, of which there are two, jointed at thefront to the frame Ain such a manner as to permit them to be movedfreely either vertically or laterally at will, each of the beams B beingprovided with two shovelplows, as shown.

D represents a circular notched metallic plate, provided with a hub atits center, having a hole therein, so that it can be secured u pon ashort stud or axle, on which it revolves freely. This plate Dconstitutes a shield for protecting the young plants from the clods orloose earth that is turned inward by the front plows, which are attachedto the inner sides of the beams D. These shields D are securedvertically to the rear ends of bars 0, which bars are pivoted to thebeams B at n. To the front end of the bars 0 are secured the metalplates 0, the form of which is clearly shown in Fig. 4. At the rear endof this piece 0 is a projection, (I, having a slot in it, as shown inFig. 4, through which a bolt, f, is passed and secured in the beam B. Bythis means the shield D is permitted to have a limited vertical movementindependent of the beam B, to adjust itself to the inequalities of thesurface, and at all times remain in contact with the ground, except whenintentionally raised there" from by elevating the plows, as hereinafterexplained.

The plow-beams B are suspended by means of the swinging bars I) from thetop of the rigid standards E, as in the patent heretofore granted to us,except that we now use a metal piece, 0, cast in the form shown in Fig.3, with flanges r on each edge for securing it rigidly to the swingingbar 1), its lower end being made, as shown, to clasp the beam B, towhich it is secured by a bolt passing loosely through it, to permit thebeams B to be moved laterally to and fro. The flanges r serve to securethe plate 0 rigidly to bar I), and also keep the latter from beingsplit, thus forming a very cheap and efficient means of uniting the barsb to the plow-beams.

For the purpose of securing the standards E more firmly in their properposition, and keepingthem from beingdisplaced or becomingloosened, weuse the angle-iron L, as shown in Fig.

5. This iron is so made as to clasp the wooden axle G on the top andrear, and projects upward against the back of standard E, to both ofwhich it is firmly bolted. It also has a projection on its upper side,through which a hole is bored or otherwise formed, to afford a bearingfor the rock-shaft I, used for raising the plows.

A pulley, e, mounted in a metal frame, is secured to the inside of thestandards E, as shown in Fig. 2. Over these pulleys a chain is passed,one end being secured to the plowbeams in front and the rear end to thearms of the rock-shaft I, by which the plows can be raised or lowered atpleasure.

The driver sits upon the seat H, with a foot I resting on each of theplow-beams B, by which means he is enabled to move the plows laterally,as may be necessary to avoid hitting the plants, and leaving his handsfree to manage the team or operate the lever m, as may be necessary.

By these improvements we are enabled to produce a very efficient anddurable cultivator, one exceedingly well adapted to the purposes forwhich it is intended.

Having thus fully described our invention, what we claim, and desire tosecure by Letters Patent, is

1. Pivoting and bracing the shield-bars U to the beams 13 in such amanner that the shields will retain their relative position to theshovels when they are being moved laterally, and at the same time bepermitted to play up and down independently of each other and of theshovels, as and for the purpose set forth.

2. The metal pieces 0, constructed as shown, and arranged to operate inconnection with the bars 0, as herein set forth.

3. The metal stirrup 0, constructed as shown, and arranged to operate inconnection with the swinging bar I) and beam B, as set forth.

4. The pulleys e, secured to the standards E,in combination with therock-shaft I, chains 8, and beams B, arranged as shown and described.

5. The angle-irons L, constructed as shown, and arranged to operate inconnection with the axle Gr, standards E, and rock-shaft I, as and forthe purpose herein set forth.

J. H. THOMAS. P. P. MAST.

Witnesses GEO. ARTHUR, S. D. CARPENTER.

